A discovery of exceptional Neolithic engravings in Buthiers, Seine-et-Marne, France
Serge Cassen, Laurent Lescop, Valentin Grimaud & Duncan Caldwell
http://journal.antiquity.ac.uk/projgall/cassen340
Introduction
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Figure 1. Distribution of hafted axe engravings from the fifth and fourth millennia BC in north-western France (after Cassen 2012).